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United States Patent | 5,322,051 |
Patterson ,   et al. | June 21, 1994 |
A front access door suitable for accessing and enclosing a housing within a multipoise furnace functions in conjunction with a safety shutoff switch to provide greater access and safety when assembling and servicing the furnace. The front access door is hingably supported upon the bottom wall of the housing for removal from the furnace and rotation between a closed position and an opened position. The shutoff switch is mounted outside the housing on the top housing wall. When the access door moves into a closed position, a switch activator, mounted to the access door, passes over the top housing wall and closes the switch, thereby allowing power to flow to a blower within the housing. When the access door is moved into an open position, the switch activator opens the switch, thereby terminating power to the blower.
Inventors: | Patterson; Randel K. (Plainfield, IN); Sherven; Allen L. (Brownsburg, IN); Beck; Scott A. (Indianapolis, IN); Swilik, Jr.; Robert C. (Indianapolis, IN) |
Assignee: | Carrier Corporation (Syracuse, NY) |
Appl. No.: | 119039 |
Filed: | September 9, 1993 |
Current U.S. Class: | 126/110R; 126/116A |
Intern'l Class: | F24H 003/02 |
Field of Search: | 126/110 R,116 R,99 R,116 A,112,117,286,287,190,110 A,114 |
3956674 | May., 1976 | Farley | 126/110. |
4343290 | Aug., 1982 | Flatte | 126/110. |
4964392 | Oct., 1990 | Bruno et al. | 126/21. |